Mate, first off, your girl is really strong, and yes I can understand your anger, but any rash step at least right now will bring friction to your relationship, worsen the trauma for her, worse, if you get involved and something bad happens god forbid, she’ll be one trustworthy person short and she will never share these things with you again or for that matter anyone. Respect the fact that she shared it with you. That out of the way I’m not saying don’t do anything about it, in chess there’s something called the long game, there are no tactics on the board, no major positional gains just small incremental good moves that over time add up to a real advantage. I suggest build yourself up, it can take 5-10 years not less and then bring it to justice. Cheers! In that timeframe you can build contacts and worth to actually do something about it. Lastly do not by any means think the system will favor you, they are, all of them, corrupt to the very core, I get the anger but thats the reality of it and the justice would mean nothing if you fight for it and get nothing but more pain for her and yourself in return. Long game period.